How to Get Rid of Mold in a Sink Drain

Written by andrew smith
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How to Get Rid of Mold in a Sink Drain
Eliminate mould spots and odours from a drain. (Jupiterimages/ Images)

Mold appears inside and around drains due to moisture from discarded drink items and tap water. The untreated mould spreads and leaves a noticeable odour that makes the entire sink seem unclean. Getting rid of the mould includes eliminating any visible spots and the aforementioned odour, as well as preventing the mould's return to the area. A homemade sink-and-drain cleaner kills the mould and deodorises the drain, and it is safe to pour into pipes and for the environment.

Skill level:

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Things you need

  • Thin brush or old toothbrush
  • Baking soda
  • White vinegar
  • Kettle or small pot

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  1. 1

    Take all items out of the sink. Remove the sink's drain cover if one exists. The process for taking the cover off varies depending on the type of cover.

  2. 2

    Turn on the sink's hot water, then scrub in and around the drain with the brush. Scrub until at least some of the mould spots are eliminated or for a couple of minutes if you cannot see the mould inside the drain. Rinse the brush with water when finished.

  3. 3

    Pour at least 1/2 cup baking soda into the mouldy drain, then pour a few cups (eyeballing is OK) of vinegar into the drain. A foamy chemical reaction will occur. Wait roughly one minute before proceeding.

  4. 4

    Scrub in and around the drain once more to eliminate the mould. Leave the vinegar and baking soda solution unrinsed for 15 to 30 minutes.

  5. 5

    Fill a kettle or small pot with water. Boil the water on your stove.

  6. 6

    Pour the boiled water into the drain. Do so slowly to avoid splash back and injury.

  7. 7

    Inspect the drain. Repeat steps 2 through 6 if you still suspect mould in the drain.

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